Rotary engine.



No. 732,404. PATRNTRD-JUNR'SO, V1903. R. FOSTER.

ROTARY ENGINE.

APPLIOATION FILED JAN. 4, 1902.

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ROTARY ENGINE.

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'PATENT OFFICE.

.RICHARD FOSTER, OF NEWCASTLE, PENNSYLVANIA.

ROTARY' ENGINE.

SPECIFICATION forming part of Letters Patent No. 732,404, dated j'un 30,1903. Application led January 4, 19.02.I Serial No. 88,369. (No model To@ZZ whom, it may concern:

Be it known that I, RICHARD FOSTER, a citizen of the United States,residing at Newcastle, in the county of Lawrence and State ofPennsylvania, have invented a new and useful Improvement in RotaryEngines, of which improvement the following is a specification.

This inventionrelates to certain new and vuseful improvements in rotaryengines, and

Another object of this invention is to pro duce a rotary engine that maybe easily reversed and will operatein one direction as well as in theopposite direction.

The invention also aims to provide an engine that will be extremelysimple in construction, strong, durable, comparatively inexpensive tomanufacture, and highly eflicient in its use; furthermore, one fromwhich a greater amount of power can be obtained with comparativelylittle motive force.

The invention further contemplates to construct a rotary engine thatwill be perfectly balanced and one that will operate with the greatestease.

In describing the invention in detail, ref-- erence is had to theaccompanying drawings, forming a part of this specification, and whereinlike numerals of reference indicate like parts throughout the severalviews7 in which- Figure 1 is a sectional view of the end of the engine,with the 'cylindrical head and steam-chest removedv therefrom. Fig. 2 isa front elevation of the cylinder-head. Fig. 3 is a verticalsectional'view of the steam-chest and head. Fig. 4 is a front elevationof the cylinder-head, showing the exhaust end of the cylinder. Fig. 5 isa sectional View of the exhaust-steam chest. Fig. 6 is a front view ofthe steam disk or valve. Fig. 7 is a front elevation of theexhaust-valve. K In Fig. 1 the numeral 3 represents steamleaves workingin a direction to left, one leaf closed.

just opening, one on expansion, and onejust 4 indicates the leavesclosed which would operate the piston in turning'to the right. 5represents the steam-port under leaf 3, and 6 indicates steam-port underleaf 4 and in the reverse of the port 5. 7 indicates a shaft, and 8shows steam-space for leaves to open and receive the impulse of motiveforce. It is obvious that this engine has no deadcenter and that it willstart from any point, as there are just two ports open at a time andthree leaves to receive the impulse.

In Fig. 2, 9 indicates part of the head outside of raised steam-chest.10 indicates a steamchest. The numeral 11 indicates steam- 4portsopening to ports in piston, (marked tion of steam disk or valve is alsoshown. 9

is a cylinder-head. The numeral 10 indicates the raised edge ofsteam-chest. 13 indicates a raised boss, 14 represents a steam disk or Yvalve, and 15 indicates the cap of the steamchest; 16, bevel spur,gearing showing the operation of steam disk or valve used to control theoperation of disk or valve. Number 17 represents a spur-wheel shaftconnected to spur-wheel shaft on opposite end of engine or exhaust end.(Shown in Fig. 5, numeral 24.

In Fig. 4, 18 indicates the outside of said head, and 19 represents theexhaust ports or openings into steam-space outside the radius of pistonwhen the piston is running in one direction. 20 indicates openings intosteamspace and outside of radius of piston for running in the otherdirection. The numeral 21 represents the exhaust-chamber, and 22indicates an opening through the center of the head.

ln Fig. 5, 18 is a cylinder-head; 2l, elevation of exhaust-chamber;22,0pen cut through head; 23, bevel spur-gear; 24, shaft connected toshaft 17 in Fig. 3; 25, a steam-box cap showing exit of steam.

In Fig. 6, 14 is the circle of valve; 29, a gear to operate valve bybevel-wheel 16.

In Fig. 7, 27 is circle of valve. 28 is coggear to operate valve or diskby spur-wheel 23. 27 is port connecting with numbers 19 and 20, as isrequired. This valve or disk is held to place against the face ofopening in head by set-screws through cover. (Not shown in thedrawings.)

It will be seen that by the above construction of rotary engine as theleaves or wings are rotated every alternate leaf is placed in operation,and when the engine is reversed the leaves that lie normally against theturbine will be placed in operation as the engine travels in the reversedirection.

The many advantages obtained by the use of my invention will be readilyapparent from the foregoing dscription, taken in connection with theaccompanying drawings.

It will be noted that various changes may be made in the details ofconstruction without departing from the general spirit of my invention.

It will be particularly noted that this engine can be transformed into acompound-engine by using the exhaust-chamber of the rst engine for thesteam-chest of the second engine, and so on, and it will be noted thatas the engine is in operation the steam-pressure exerted on the leavesin motion will act on the outside of the leaves not in motion to keepthem in place.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

In a rotary engine, the combination of a casing, inlet and exhaust portsformed in the casing, asteam-chest, an inner turbine, wings hinged atone of their ends to the said turbine, steaIn-ports arranged in theturbine beneath the said wings, said ports extending inwardly atdifferentdepths and adapted to register with the ports in the casing, adisk valve rotatively mounted in the steam-chest and having steam-portsformed therein, said ports arranged so as to admit steam into onlycertain of the steam-ports of the turbine at one time, and means forrotating said disk valve, substantially as and for the purposespeciiied.

In testimony whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

RICHARD FOSTER.

C. W. FENTON, A. C. HEZLEP.

